Question

是的，所以我想要一个密码文本框和一个确认密码文本框，但我不确定如何正确设置它们。

我有以下内容：

    // This is where the user will enter the password for the product owner they wish to add.
    private void textBoxPassword_TextChanged(object sender, EventArgs e)
    {
        // Each character of the password will display as an asterisk.
        textBoxPassword.PasswordChar = '*';
        // Control to allow a max password length of 15 charachers.
        textBoxPassword.MaxLength = 15;
    }

    // This is where the user will re-enter the password for the product owner they wish to add.
    private void textBoxConfirmPassword_TextChanged(object sender, EventArgs e)
    {
        // Each character of the password will display as an asterisk.
        textBoxConfirmPassword.PasswordChar = '*';
        // Control to allow a max password length of 15 charachers.
        textBoxConfirmPassword.MaxLength = 15;
        // If statements to ensure that the passwords are the same.
        if (textBoxPassword.Text != textBoxConfirmPassword.Text)
        {
            MessageBox.Show("Passwords do not match.");
            textBoxConfirmPassword.Focus();
            return;
        }
    }

它可以正常工作。唯一的问题是，一旦我开始输入确认密码字段，＆＃34;密码就不匹配＆＃34;输入每个字符后显示消息。我只希望它显示在字符串的末尾。

我确信解决方案很简单，但我自学了如何使用Visual，我无法找到答案。

Answer 1

我也是初学者，但我希望我的建议能帮到你。

问题是 textBoxConfirmPassword_TextChanged 每次在其中键入符号时都会检查密码的匹配情况。要修复它，我可以提供添加一些代码：而不是

if (textBoxPassword.Text != textBoxConfirmPassword.Text)

尝试

if (textBoxPassword.TextLenght==textBoxConfirmPassword.Textlength && textBoxPassword.Text != textBoxConfirmPassword.Text)
{   
// does not match    
}

因此，当 textBoxConfirmPassword 中的符号与 textBoxPassword 中的符号数相同时，它会说明它是否匹配。但是你可以在消息错误后添加符号，所以我建议在显示错误消息之前清除 textBoxConfirmPassword.Text ，就像这样

textBoxConfirmPassword.Text="";
MessageBox.Show("Passwords do not match.");...

或者你可以阻止输入或做类似的事情。

Answer 2

使用文本框的Validating事件，而不是使用文本框的TextChanged事件来检查密码。当用户尝试将焦点更改为另一个控件时，会发生该事件。如果密码不匹配，可以通过将e.Cancel设置为true来阻止焦点更改。

Answer 3

Private Sub txtpassword_TextChanged(sender As Object, e As EventArgs) Handles txtpassword.TextChanged
    txtpassword.PasswordChar = "*"
    txtpassword.MaxLength = 16
End Sub

Private Sub txtconfirmpassword_TextChanged(sender As Object, e As EventArgs) Handles txtconfirmpassword.TextChanged
    txtconfirmpassword.PasswordChar = "*"
    txtconfirmpassword.MaxLength = 16

    If txtconfirmpassword.Text.Length = txtpassword.Text.Length Then
        If txtconfirmpassword.Text <> txtpassword.Text Then
            MsgBox("Password do not match")
        End If
    End If
End Sub

Microsoft Visual Studio 2013确认密码TextBox

3 个答案: